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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* High-level firmware API for loading and verifying rewritable firmware.
* (Firmware portion)
*/
#include "2sysincludes.h"
#include "2common.h"
#include "sysincludes.h"
#include "bmpblk_header.h"
#include "region.h"
#include "gbb_access.h"
#include "gbb_header.h"
#include "load_kernel_fw.h"
#include "utility.h"
#include "vboot_api.h"
#include "vboot_struct.h"
static VbError_t VbRegionReadGbb(VbCommonParams *cparams, uint32_t offset,
uint32_t size, void *buf)
{
return VbRegionReadData(cparams, VB_REGION_GBB, offset, size, buf);
}
VbError_t VbRegionReadHWID(VbCommonParams *cparams, char *hwid,
uint32_t max_size)
{
GoogleBinaryBlockHeader *gbb;
VbError_t ret;
if (!max_size)
return VBERROR_INVALID_PARAMETER;
*hwid = '\0';
StrnAppend(hwid, "{INVALID}", max_size);
if (!cparams)
return VBERROR_INVALID_GBB;
gbb = cparams->gbb;
if (0 == gbb->hwid_size) {
VB2_DEBUG("VbHWID(): invalid hwid size\n");
return VBERROR_SUCCESS; /* oddly enough! */
}
if (gbb->hwid_size > max_size) {
VB2_DEBUG("VbDisplayDebugInfo(): invalid hwid offset/size\n");
return VBERROR_INVALID_PARAMETER;
}
ret = VbRegionReadGbb(cparams, gbb->hwid_offset, gbb->hwid_size, hwid);
if (ret)
return ret;
return VBERROR_SUCCESS;
}
#define OUTBUF_LEN 128
void VbRegionCheckVersion(VbCommonParams *cparams)
{
GoogleBinaryBlockHeader *gbb;
if (!cparams)
return;
gbb = cparams->gbb;
/*
* If GBB flags is nonzero, complain because that's something that the
* factory MUST fix before shipping. We only have to do this here,
* because it's obvious that something is wrong if we're not displaying
* screens from the GBB.
*/
if (gbb->major_version == GBB_MAJOR_VER && gbb->minor_version >= 1 &&
(gbb->flags != 0)) {
uint32_t used = 0;
char outbuf[OUTBUF_LEN];
*outbuf = '\0';
used += StrnAppend(outbuf + used, "gbb.flags is nonzero: 0x",
OUTBUF_LEN - used);
used += Uint64ToString(outbuf + used, OUTBUF_LEN - used,
gbb->flags, 16, 8);
used += StrnAppend(outbuf + used, "\n", OUTBUF_LEN - used);
(void)VbExDisplayDebugInfo(outbuf);
}
}
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